Thank you very much :-). I used the cinematic-package from unity for creating the intro. And getting things in time is not that complicated - I made my life very easy and placed the objects disabled in the scene, activated them via timeline and things were playing on start. So it has to match :-P.
It is my very first cinematic and I'm happy that it does what I wanted to achieve with it. I hope that wasn't by accident so that I can repeat that for every game ^^.